In American roulette, the number of slots on the wheel is 36. These slots are numbered 1 to 36 in a clockwise direction.
The number on each slot stands for the number of possible numbers that can be found on that particular slot. So, for example, slot number 5 would represent the number 5, 6, 7, 8 and 9. .
Numbering starts at 1 at the bottom of the wheel and goes around to 36 at the top. So in American roulette, if you want to bet on a particular number, you would bet on slot number 18 or 19.
Since there are 36 slots on a roulette wheel and each one can hold a different number, it is possible to bet on any single number or combination of numbers within a single spin of the wheel. For example, if you wanted to bet on a single number like 18 or 19 and it came up as part of your spin, you would win your bet.
However, if you wanted to bet on a combination like 18 and 20 (two different numbers), your bet would not be successful since 18 and 20 do not appear together on the wheel.
One thing to keep in mind when playing American roulette is that even though there are 36 slots on the wheel, only one number will actually come up as part of your spin. So even though you might think that there are 36 chances of getting any given number when playing American roulette, in reality there are only one chance in 36 of getting that specific number that you have chosen to wager on.
